AutoCAD Extrude

The Extrude command in AutoCAD 3D is used to create a surface or solid of a 2D surface or a 3D curve.

Consider the below image:

The Extrude command is widely used to create walls, shapes, etc.

Let's understand by few examples.

Example 1:

Consider the below 2D surface.

Here, we have created a rectangle.

• To create a solid of the above figure, follow the below steps:

1. Select Extrude command from the ribbon panel, as shown below:
   Or
   Type Extrude on the command line < press Enter.
2. Select the object, which we want to Extrude.
   Here, we have selected the rectangle.
3. Press Enter.
4. Now, specify the height of the Extrude.
   We can specify the height in +Z or –Z direction.
   We can either determine the height with the cursor or by the value.
   Here, we have specified the value = 5.
   The object will now look like the below image:

• To create a surface of the 2D rectangle, follow the below steps:

1. Type Extrude on the command line < press Enter.
2. Type Mode or M on the command line < press Enter.
3. Type Surface or SU on the command line < press Enter.
4. Select the object to Extrude.
   Here, we have selected the rectangle.
5. Press Enter.
6. Specify the height of the Extrude.
   Here, we have specified the value = 3.
   The object will now look like the below image:
   

• To Create using Direction/ path/ Taper Angle/ Expression, follow the below steps:

1. Type Extrude on the command line < press Enter.
2. Select the object, which we want to Extrude.
3. Select one option from Direction/ path/ Taper Angle/ Expression.
   Here, we have selected Taper Angle.
4. Press Enter.

The figure will now appear as:

Example 2:

Consider the 2D object shown below:

Here, we have drawn three objects.

The steps are listed below:

1. Type Extrude on the command line < press Enter.
2. Select the object.
   Here, we will first select the inner polygon.
3. Press Enter.
4. Specify the height. Here, we have entered height = 4.
   The object will appear as:
   
5. Again, Type Extrude on the command line < press Enter.
6. Select the object.
   Here, we will select the circle.
7. Press Enter.
8. Specify the height. Here, we have entered height = 5.
   The object will appear as:
   
9. Again, Type Extrude on the command line < press Enter.
10. Select the object.
    Here, we will select the outer rectangle.
11. Press Enter.
12. Specify the height. Here, we have entered height = 1.

The object in 3D will now look like the below image:

Similarly, we can create different objects, models, etc. with the help of the Extrude command.